CVE-2026-56210
CVE-2026-56210: 1 tracked advisory record across Red Hat. Compare vendor sources and published fix guidance.
Compare the source-linked records below. Ratings and product/version details belong to each advisory; they are not a single CVE-wide score or proof that every listed product is affected. How VulniPulse collects and checks evidence.
Vendor advisory comparison
Red Hat
1 advisory- Advisory severityHigh7.1
High [CVE-2026-56210] heap-buffer-overflow read via missing bounds check in ctrl_set_layer_id
CVE-2026-56210Source published Source updated
A heap-buffer-overflow read vulnerability was found in libaom, the reference AV1 codec implementation. A missing bounds check in the SVC (Scalable Video Coding) layer ID control function allows setting a spatial_layer_id exceeding the configured number of layers. This causes an out-of-bounds heap read of approximately 40,728 bytes when computing a layer context array index. An attacker who can influence SVC encoder parameters in a network-facing service could exploit this for information disclosure (heap content leak) or denial of service (segmentation fault from hitting unmapped memory). This vulnerability is rated as Important severity because the 40KB out-of-bounds heap read can disclose sensitive information from adjacent heap allocations (including pointers useful for ASLR bypass in…
- Affected products in this advisory
- Red Hat Enterprise Linux AI 3.3 for RHEL 9
- Red Hat Enterprise Linux AI 3.4 for RHEL 9
- Red Hat Enterprise Linux AI 3.5 for RHEL 9
- Red Hat AI Inference Server 3.2
10 more entries in the full advisory.
- Source-reported affected versions
- Affected-version details not available in this record.
- Source-reported fixed versions
- aom-0:3.14.0-1.el9ai
- rhaiis/vllm-cuda-rhel9:1787860580
- rhaiis/model-opt-cuda-rhel9:1787772157
- rhaiis/vllm-rocm-rhel9:1787884873
46 more entries in the full advisory.
- Mitigation guidance
- There is no complete mitigation for this vulnerability. The following measures can reduce risk: 1. If using libaom as a standalone encoder library with SVC enabled, validate that spatial_layer_id does not exceed the number of configured spatial layers before calling aom_codec_control with AV1E_SET_SVC_LAYER_ID. 2. Restrict access to encoding services to trusted clients only. 3. For Firefox and Thunderbird, ensure browsers are updated to versions that include the patched libaom (v3.14.0 or later). 4. Monitor encoding service processes for unexpected crashes (segfaults) that may indicate exploitation attempts.
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